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NGC 1745 (3,217 of 18,816)

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NGC 1745

NGC 1745, h 2702, GC 966

RA: 04h 54m 20s
Dec: −69° 09′ 30″

Con: Dorado
Ch: MSA:496, U2:444, SA:24

Ref: SIMBAD

(reference key)

Type: open cluster

Mag: B=?, V=13.4

Size: ?
PA: ?

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Sketches  (1)

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History and Accurate Positions for the NGC/IC Objects (Corwin 2004)

NGC 1745 is a diffuse nebula -- probably an emission nebula -- in the NGC 1743 complex in the LMC. John Herschel's position was an estimate based on his measured positions for NGC 1743 and N1748, but it is close enough to the correct position to identify the nebula without question.

N1745 is called a star cluster in the ESO/Uppsala catalogue, but this is wrong. Furthermore, there is no cluster at the ESO position, but just a group of faint stars.

Historical observations

John Herschel

John Herschel recorded it as "faint, small, No 3 in a group of 4. Place estimated from No. 2." The four objects are NGC 1737, 1743, 1745 and NGC 1748.

Ellery, R.L.J. (1885) Melbourne Observations

Recorded in "Observations of the Southern Nebulae made with the Great Melbourne Telescope".

See the discussion of Lithograph M.3.22 for the details.

Published comments

Henize (1956)

Henize (Catalogues of Hydrogen Alpha Emission Stars and Nebulae in the Magellanic Clouds, Astrophysical Journal Supplement 2, 1956, p315), his nebula LH N 120-83 "includes NGC 1745 and NGC 1737." This nebula he describes as measuring 5.7' east-west x 5' north-south, quite irregular in outline, slightly elongated and showing considerable structure.

Sulentic & Tifft (1973)

The RNGC (Sulentic and Tifft 1973) notes that this is a cluster+nebulosity in the LMC.

Modern observations

Brian Skiff

15cm - vf w/a few *s and no neb @ 195x. BS, 12Nov1993, LCO.

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